Sodium hydroxide
SIGALD/06203 - puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets
Synonym: ‘Caustic soda’
CAS Number: 1310-73-2
Empirical Formula (Hill Notation): HNaO
Molecular Weight: 40.00
EC Number: 215-185-5
MDL Number: MFCD00003548
Linear Formula: NaOH
Product Type: Chemical
| anion traces | chloride (Cl-): ≤20 mg/kg |
| phosphate (PO43-): ≤10 mg/kg | |
| silicate (as SiO2): ≤100 mg/kg | |
| sulfate (SO42-): ≤30 mg/kg | |
| assay | 98-100.5% |
| cation traces | Al: ≤10 mg/kg |
| As: ≤2 mg/kg | |
| Ca: ≤10 mg/kg | |
| Fe: ≤10 mg/kg | |
| Hg: ≤1 mg/kg | |
| K: ≤1000 mg/kg | |
| Pb: ≤0.5 mg/kg | |
| density | 2.13 g/cm3 at 20 °C |
| form | pellets |
| grade | puriss. |
| impurities | ≤0.0005% total nitrogen (N) |
| ≤0.002% heavy metals (as Pb) | |
| ≤0.5% Na2CO3 | |
| InChI | 1S/Na.H2O/h;1H2/q+1;/p-1 |
| InChI key | HEMHJVSKTPXQMS-UHFFFAOYSA |
| mp | 318 °C (lit.) |
| quality | meets analytical specification of Ph. Eur., BP, NF, E524 |
| Quality Level | 200  |
| SMILES string | [OH-].[Na+] |
| solubility | water: soluble 1260 g/L at 20 °C |
| vapor density | >1 (vs air) |
| vapor pressure | <18 mmHg ( 20 °C) |
| 3 mmHg ( 37 °C) |
| Application: | Sodium hydroxide can be used as: • A reagent in the gold-catalyzed selective oxidation of glycerol to glyceric acid. • A catalyst for the cross-dehydrogenative coupling of alcohols and hydrosilanes to synthesize silyl ethers. • A base in the transition-metal free Sonogashira-type couplings of aryl halides and alkynes to synthesize ynones in the presence of PEG as a phase-transfer agent. |
| General description: | Sodium hydroxide, also known as lye and caustic soda, is a strong base used universally as a neutralization agent in the chemical industry, paper making, petroleum refining, cleaning compounds, and drain cleaners. |
| Symbol |  GHS05 |
| Signal word | Danger |
| Hazard statements | H290 - H314 |
| Precautionary statements | P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 35 |
| Safety Statements | 26-37/39-45 |
| RIDADR | UN 1823 8 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 98-100.5% |
| mp | 318 °C (lit.) |
| Density | 2.13 g/cm3 at 20 °C |
| UNSPSC | 12352302 |